<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Pie graph</title>
  <style>
    .piegraph {
      display: inline-block;
      width: 250px;
      height: 250px;
      border-radius: 50%;
      background-image: conic-gradient(#37c 30deg, #3c7 30deg, #3c7 65deg, orange 65deg, orange 110deg, #f73 110deg, #f73 200deg, #ccc 200deg);
    }   
  </style>
</head>
<body>
  <div class="chart piegraph">
  </div>
</body>
</html>